以下哪句是定语从句?

题目

以下哪句是定语从句?
I want to return the tennis racket Iborrowed from you last week.Will you be home today at about five o'clock?是什么修饰什么?

答案

为你解答.
定语从句是I borrowed from you last week, 它省略了引导词which \ that.被修饰的先行词是racket.
句意：我想归还上周向你借的那个网球拍.今天你五点钟左右在家吗?